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THERMAL CONDUCTlVlTY MEASUREMENTS ON WET PAPER SAMPLES AT HIGH TEMPERATURES

 

作者: C.J. Nederveen,   J.G.M. Finken,  

 

期刊: Drying Technology  (Taylor Available online 1992)
卷期: Volume 10, issue 1  

页码: 189-198

 

ISSN:0737-3937

 

年代: 1992

 

DOI:10.1080/07373939208916420

 

出版商: Taylor & Francis Group

 

关键词: paper;thermal conductivity;high temperature;high water content;dynamic measurements

 

数据来源: Taylor

 

摘要:

The effective thermal conductivity of a number of paper sheets was measured at high temperatures and various water contents. This was done by enclosing a pile of sheets between brass plates which were subjected to a sinussoidally varying temperature. The temperature variations at two positions in the pile were measured using thermocouples. From amplitude ratio and phase shift the conductivity was calculated. At low water contents, conductivity was proportional to the density of the paper and independent on temperature. At intermediate water contents, the conductivity increased markedly with temperature, attaining values higher than for pure water.

 

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